sendme(8) sendme(8)
NAME
sendme - Send a signal from driver to user and measure time intervals
SYNTAX
sendme [-a|-a PROC] [-b USEC] [-l loops] [-p PRIO]
DESCRIPTION
The program sendme uses the backfire driver to send a signal from driver to user. It then reads the timestamp from the driver and calcu-
lates the time intervals to call the driver and to receive the signal from the driver.
OPTIONS
-a, --affinity[=PROC]
Run on procesor number PROC. If PROC is not specified, run on current processor.
-b, --breaktrace=USEC
Send break trace command when latency > USEC. This is a debugging option to control the latency tracer in the realtime preemption
patch. It is useful to track down unexpected large latencies on a system.
-l, --loops=LOOPS
Set the number of loops. The default is 0 (endless). This option is useful for automated tests with a given number of test cycles.
Sendme is stopped once the number of timer intervals has been reached.
-p, --prio=PRIO
Set the priority of the process.
FILES
backfire.ko
EXAMPLES
# modprobe backfire
# sendme -a -p99 -l1000000
Samples: 1000000
To: Min 0, Cur 0, Avg 1, Max 11
From: Min 2, Cur 3, Avg 3, Max 43
AUTHORS
Carsten Emde <C.Emde@osadl.org>
SEE ALSO
backfire(4)
0.2 sendme(8)
